-Disadvantages
-Cost: Expensive to set up system (fixtures, water pumps, etc)
-Nutrient solution must be kept at original volume
- Water evaporates; add water, Solution can become toxic if too much nitrates (low light)
-Use beneficial predators to control insects
-Water quality can be a problem, poor plant growth
- Excessive alkalinity or salt, Softened water, too much sodium
-Roots need oxygen - Need a bubbler or continuous flow
-Plants need to be supported (no soil to support)
-Cost too high for most commercial growers (grow expensive crops)